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Function std.path.defaultExtension

Returns the path given by path, with the extension given by ext appended if the path doesn't already have one.

Including the dot in the extension is optional.

This function always allocates a new string, except in the case when path is immutable and already has an extension.

Prototype

immutable(Unqual!C1)[] defaultExtension(C1, C2)(
  C1[] path,
  C2[] ext
)
if (isSomeChar!C1 && is(Unqual!C1 == Unqual!C2));

Examples

assert (defaultExtension("file", "ext")      == "file.ext");
assert (defaultExtension("file", ".ext")     == "file.ext");
assert (defaultExtension("file.", "ext")     == "file.");
assert (defaultExtension("file.old", "new")  == "file.old");
assert (defaultExtension("file.old", ".new") == "file.old");

Authors

Lars Tandle Kyllingstad, Walter Bright, Grzegorz Adam Hankiewicz, Thomas Kühne, Andrei Alexandrescu

License

Boost License 1.0

Comments